E R R A T A

Page 7, line 9: read to settle original: "infidere". Pages 12 & 13: in the observations for the day April 10 and the four following days, star c is placed higher than it should be. Page 13, line 13: read following. Page 20, second-to-last line original: "lin. penult.": read $1 \frac{1}{2}$. Page 26, line 13: read in place. Page 27, line 3: read we place. Page 36, line 20: read doubted. Page 37, line 2: read of the year. In the same place, line 4: delete the comma. Page 38, lines 10 & 13: for eighth, read ninth; and in the same place, line 18: for twelfth, read thirteenth. Page 56, line 7: read widest. In the same place, line 16: read ellipse. In the same place, line 18: in the margin after of Saturn, add movements original: "motus". In the same place, line 21: read with the widest. In the same place, second-to-last line: read one and a half times The term "sesquialteram" refers to a ratio of 3:2, often used in describing planetary proportions or periods.. And in the last line: read which we said. Page 62, line 4: read these in F, or when they contain different parts with respect to A, such as when Saturn is in N, and Earth original: "Tellus" is in f: in both cases, etc. In the same place, line 20: for and original: "atque" read and as original: "utque". Page 66, line 7: for F, substitute f.